7
"
 To send notifications through cron (as done in the todo app),
 the command in the cron jobs need the following structure:
 -------------------------------------------------------------
 export DISPLAY=:0.0 && XDG_RUNTIME_DIR=/run/user/$(id -u) 
 /usr/bin/notify-send '<text for notifications>'
 -------------------------------------------------------------
 Remember it must be sent as root. 'sudo crontab -e'
 "